Number of blocks and total blocktime: the number of instances and total elapsed time when the thread was in a BLOCKED state while invoking a method or service.
阻塞数量和总阻塞时间：在调用某个方法或服务时，处于BLOCKED状态的线程的实例数量和总占用时间。
2
Set aside a block of time to do it.
安排出一整块时间来处理票据。
3
In this test case, the aggregated per-interval average blocktime was zero, but in Figure 12, you can observe a feature of some APM visualization tools.